Try out these worksheets if you need to work on the difference between expressing the future with will + infinitive or am/is/are + going to + infinitive.
- Will / Be going to 1
- Will / Be going to 2
- Will / Be going to 3
- Will / Be going to 4 (more advanced level)
(“Will / Be going to 2” exercises taken from Elementary English Grammar, Digby Beaumont, Heinemann)
(“Will / Be going to 3” taken from www.islcollective.com)